console.log('oi tste');

const a = 1;
const b = 3;
const c = 10;
const d = 12;
const e = 14;

console.log('a + d =', a + d);
console.log('b * d =', b * d);
console.log('a - d =', a - d);
console.log('a + d =', a += d);
console.log('b -= d =', b -= d);
console.log('a ** d =', a ** d);